Merge "Adjust grid cell visualizations." into tm-dev am: 4349d21246 am: 6ea4a31c35

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/17586930

Change-Id: Ia67ef6be1a61b4a9d9013712f751c419a73704d1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>